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Notes Payable and Stock Warrants - Additional Information (Details) - USD ($)
Apr. 23, 2018
Feb. 23, 2018
Nov. 17, 2017
Mar. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]          
Warrant liability       $ 4,143,000 $ 0
Class Of Warrant Or Right, Unassociated Warrant Grants, Cash Settlement Obligation       $ 368,533,620  
Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   30,000,000      
Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Aggregate amount of debt   $ 3,000,000      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   40,000,000      
Debt Instrument, Additional Amount Of Financing   $ 1,000,000      
Proceeds from Issuance of Debt   $ 2,500,000      
Class Of Warrant Or Right, Additional Warrants   10,000,000      
Line of Credit [Member] | Amended And Restated Loan Agreement [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Debt Instrument, Prepayment Premium Rate   5.00%      
Debt Instrument, Required Liquidity   $ 2,000,000      
Line Of Credit Facility, Cash Flow Variance Threshold   10.00%      
Line of Credit [Member] | Short Term Loan, Due May 2018 [Member] | Hale Capital Partners, LP [Member]          
Debt Instrument [Line Items]          
Aggregate amount of debt   $ 500,000      
Line of Credit [Member] | Short Term And Commitment Loans [Member]          
Debt Instrument [Line Items]          
Class Of Warrant Or Right, Subscription To Purchase, Percentage     50.00%    
Senior Notes [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Aggregate amount of debt   $ 4,000,000      
Class Of Warrant Or Right, Senior Debt Component   $ 0.10      
Prime rate | Line of Credit [Member] | Short Term Loan, Due May 2018 [Member] | Hale Capital Partners, LP [Member]          
Debt Instrument [Line Items]          
Variable interest rate     0.75%    
Common Stock [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   489,320,000      
Class Of Warrant Or Right, Warrant Ownership, Percentage   25.00%      
Class Of Warrant Or Right, Issued   12.223      
Common Stock [Member] | Line of Credit [Member] | Short Term Loan, Due May 2018 [Member] | Hale Capital Partners, LP [Member]          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     61,165,134    
Common Stock [Member] | Line of Credit [Member] | Short Term And Commitment Loans [Member]          
Debt Instrument [Line Items]          
Class Of Warrant Or Right, Issued     13,859,128    
Class Of Warrant Or Right, Subscription To Purchase, Percentage     66.66%    
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 0.001    
Common Stock [Member] | Prime rate | Senior Notes [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Variable interest rate   0.75%      
Additional Backstop Warrant [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     3,000,000    
Additional Backstop Warrant [Member] | Common Stock [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     41,577,382    
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 0.001    
Financing Warrants [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     366,990,000    
Maximum | Hale Capital Partners, LP [Member] | Line of Credit [Member] | Short Term And Commitment Loans [Member]          
Debt Instrument [Line Items]          
Potential Ownership Percentage By Controlling Owners     73.00%    
Series A Preferred Stock | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   0.0225      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.2643      
Series A Preferred Stock | Minimum [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Private Placement, Lender Purchase Commitment     25.00%    
Subsequent Event | Financing Warrants [Member] | Line of Credit [Member] | Commitment Loan [Member] | HCP-FVA, LLC          
Debt Instrument [Line Items]          
Common stock issued for warrants (in shares) 53,370,601